Picture frame



FIG. 1 is a front elevational view of a picture frame showing my new design;

FIG. 2 is a top plan view thereof, the bottom view being substantially a mirror image;

FIG. 3 is a right end elevational view of FIG. 1, the left end view being a mirror image thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a cross-sectional view taken substantially along the line 5--5 of FIG. 1. 

The ornamental design for a picture frame, as shown and described. 